<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <link rel="manifest" href="http://localhost:63343/WebStorm/html/manifest.json?_ijt=msaspcnana7sosqtgbari64pu9" />
    <title>6666</title>
    <style>
        div {
            --bg : rgba(103, 50, 155, 0.94);
            width: 100px;
            height: 100px;
            display: block;
            background-color: var(--bg);
            transition: all 8s;
        }

        div:hover{
            --bg:red;
        }

    </style>
</head>
<body>
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<script>

</script>
</body>
</html>